RSV is spread through the air and contracted through a person's eyes, nose, or mouth, according to the Mayo Clinic. AaronAmat/ iStock

In most cases, people who contract the illness can fend it off naturally and will feel better after a week or two. However, young children and the elderly — especially those with weakened immune systems — may have trouble recovering quickly, according to the CDC. In some cases, hospitalization may be required.

Symptoms of RSV include a runny nose, coughing, and trouble breathing

Similar to those of a cold or the flu, RSV symptoms include coughing or wheezing, a runny nose, trouble breathing, and a decreased appetite. According to the CDC, RSV "may not be severe when it first starts," but it can become worse as the days progress.

Infants are most likely to be affected by these symptoms, and the Mayo Clinic reported that a child with RSV may appear more irritable or lethargic than usual, writing, "You may notice your child's chest muscles and skin pull inward with each breath."

Fever can also be a symptom of RSV, but not everyone who contracts the disease gets a fever, according to the CDC. If you have difficulty breathing, a high fever, or a blue color on the lips, nail beds, or skin, you should see a doctor right away, according to the Mayo Clinic.

A medicine exists to help people at high risk for RSV

While the majority of people who contract RSV can heal on their own, the CDC said those who have a heightened risk for contracting the disease or becoming very ill from it can take a preventative medicine called palivizumab. The medicine is given through a series of monthly shots during RSV season, which is in the fall, winter, and spring in the United States.

Prematurely born babies and children with heart and lung conditions can receive a medicine to prevent RSV.via Google Images

Palivizumab is reserved for prematurely born babies and children with heart and lung conditions that make them more susceptible to RSV. For anyone else who contracts RSV, the best course of action is to rest and stay home to avoid spreading the disease. People with RSV can take fever reducers like ibuprofen to help with any pain.

While a vaccine for preventing RSV does not yet exist, the CDC said researchers are working to develop one.

Until a vaccine is created, the best way to prevent RSV and its spread is through thorough handwashing, covering sneezes and coughs, avoiding contact with people who are sick, and keeping your hands away from your face, according to the CDC.